This activity leads to a depression of the sympathetic nervous system, a respiratory depression, general cardiac collapse and death. 4 Natural catecholamine stores may not be depleted for up to 24 hours of continued MAO inhibition. 1 Signs and symptoms following an acute overdosage will usually resolve in three to four days, but may persist for up to two weeks in some patients. 5

But we do know, from years of experience and our knowledge of nutrition, that excessive intake of popcorn can lead to obesity and probably also to overdosage of salt, which can induce high blood pressure.